Struct MessageId 

pub struct MessageId { /* private fields */ }

Unique identifier for a Plumtree message.

Composed of:

• 8 bytes: timestamp (milliseconds since UNIX epoch)
• 8 bytes: node-local counter
• 8 bytes: random component

This provides uniqueness across nodes and time while being efficient to generate and compare.

Implementations

impl MessageId

pub const ENCODED_SIZE: usize = 24

Size of the message ID in bytes when encoded.

pub fn new() -> Self

Create a new unique message ID.

pub const fn from_parts(timestamp: u64, counter: u64, random: u64) -> Self

Create a message ID from raw components (for testing/deserialization).

pub const fn timestamp(&self) -> u64

Get the timestamp component.

pub const fn counter(&self) -> u64

Get the counter component.

pub const fn random(&self) -> u64

Get the random component.

pub fn encode(&self, buf: &mut impl BufMut)

Encode the message ID into bytes.

pub fn encode_to_bytes(&self) -> Bytes

Encode the message ID into a new Bytes buffer.

pub fn decode(buf: &mut impl Buf) -> Option<Self>

Decode a message ID from bytes.

Returns None if the buffer is too small.

pub fn decode_from_slice(data: &[u8]) -> Option<Self>

Decode a message ID from a byte slice.

Trait Implementations

impl Clone for MessageId

fn clone(&self) -> MessageId

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for MessageId

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for MessageId

fn default() -> Self

Returns the “default value” for a type.

impl Display for MessageId

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Hash for MessageId

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for MessageId

fn cmp(&self, other: &MessageId) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for MessageId

fn eq(&self, other: &MessageId) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for MessageId

fn partial_cmp(&self, other: &MessageId) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for MessageId

Available on crate feature serde only.

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for MessageId

impl Eq for MessageId

impl StructuralPartialEq for MessageId